The House of Representatives does not officially record MPs who abstain, but is estimated about 14 MPs did not vote on the same-sex marriage bill.
This included some of Parliament's most high profile "no" advocates, including Treasurer Scott Morrison, former prime minister Tony Abbott and former defence minister Kevin Andrews. Deputy Prime Minister Barnaby Joyce was also among the group, along with renegade Liberal Nationals MP George Christensen, conservative West Australian Liberal Andrew Hastie and Assistant Health Minister David Gillespie.
Government frontbenchers Michael Sukkar and Alex Hawke are also understood to have abstained from the vote on Thursday evening
